Friction draft-rigging for railway-cars.



No. 862,991. PATENTED 111111.13, 1907.

FRIGTIUN DRAFT RIGGING POR RAILWAY CARS. APPLIUATION FILED 111mm. 1907.

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- PATENTBD AUG.13,19 07. 1.?.0700NN0R- FRIGTION DRAFT RIGGING POR RAILWAY GARS.

APPLIUATION FILED JUNE l2. 1907.4'

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UNITED singes JOHN F. OCONNOR,OF CHICAGO, ILLINOIS, SSIGNOR 'lO W. H.

PATENT OFFICE.

MINER COMPANY, OF

CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

FRICTION DRAFT-RIGGING- FOR RAILWAY-GARS.

. Specification of Letters Patent."

Patented Aeg. 13, 1907.

Application nea June 12,1907.' Serial No. 373,486.

To all whom' 'it may concern: y

Be itknown that I, JOHN F. OCoNNon, a citizen of the United States, residing in Chicago, in the county of "Cook and State of Illinois,`have invented a new and useful Improvement in Friction Draft-Rigging for Railway-Cars, of which the following is a specification.

My invention relates to friction draft rigging for railway cars.. i I

"The object of my invention is to provide a yfriction draft rigging' having a direct acting'spring longitudi- ,nally arranged inthe lineof draft so as to have a direct cooperating to furnish a'frictional resistance to aid in spring cushioning effect, and having also a plurality of cooperating friction elements or devices each and all cushioning the draw-bar, and which will be of a. strong,

simple, efficient and durable construction, and not liable tobebroken or injured,

My invention consists in the means I employ to practically accomplish this object or result as herein shown particularly speciand described, the same being more fied in the claims. L

In the accompanying drawing forming a part of this specification, Figure l is a side elevation partly in lougitudinal vertical section of a friction spring draft rigging embodying my invention. Fig. 2 is a p'lan view partly in horizontal section. Fig. 3 is a vertical cross section on line 3f-3 of Fig. 2`. Fig. 4 is a detail side ele-l vation of one of the hinged segmental cylindrical fric-` tion shoes. Fig. 5 is a detail elevation of one of the friction shoe followers showing its friction face. Fig. 6 is a similar view showing its opposite face. Fig, 7 is a de` tail view of'one of the outer semi-cylindric friction shoes: and Fig-8 is a detail planyiew partly in horizonvtal section. 4

In the accompanying drawing, A represents the center sills, draft timbers or other longitudinal frame members of the car to which the'draft' rigging-is applied. Al is the front or cross sill. lB is the draw-bar, Bl the drawi bar yoke secured to the draw-bar by rivets b,v C C the abutment shoulders or stops secured to the dra-.ft timbers or other longitudinal. frame members of the car,

'and against which the main followers D D of the draft rigging abut. The main followers D D are each furnished with an inner semi-cylindric friction face d.

E e are longitudinally arranged direct acting springs interposed between the main followers D in the line of draft and inclosed within the hollow cylindrical quadrant hinged friction shoes F Fl and F Fi. Each of the friction shoes F Fl has an exterioririction face f in sliding frictional engagement with the cylindrical friction face d of the main followers D D. And each of these' .segmental cylindrical hinged friction shoes F Fi`isl also furnished with an' internal cylindrical friction face'f?, which is in sliding frictiona-l engagement with the spring these friction shoes F. H is a removable tie or guide plate removably connected to the center sills or other draft timbers A by bolts h and by which the main followers and draft rigging as a whole is'supported and guided.

' In operation, by movement of the draw-bar in either direction, the longitudinally arranged spring is directly Acompressed between the front and rear main followers D D which also act as friction shoes against the exterior friction faces of the four segmental or quadrant shaped cylindric hinged friction shoes F F1, F F1,thns contracting the same and causing the lsame'to also exert a frictional resistance at their internal friction faces against the spring engaging friction shoe followers G G, so that the draw-bar is effectually cushioned not only by the direct acting spring but also by the frictional resistance of all the several movable friction devices which are i interposed between the spring and the draw-bar or its yoke. By this means, l produce a very simple, strong and compact friction spring draft rigging, and one which i voperates efficiently and releases with certainty and reliability. A

1. In a friction spring draft rigging, the combination with the stops, draw-bar, direct acting spring and *a pair of main followers having inner' curved friction faces,

hinged" segmental friction shoes having external fand' internal curved friction faces and a pair of-spring engaging friction shoe followers having external friction faces engaging the internal .friction faces` of the hinged friction shoes, substantially as specified. y

2. In a friction spring draft rigging, the combination 'with the stops, draw-bar, direct acting spring and a pair of main followers having inner curved friction faces, hinged segmental friction shoes having external and internal curved friction faces and a pair of spring engaging friction .shoe followers having external friction faces engaging the internal friction faces of the hinged 4friction shoes, said hinged friction'shoes being hinged together in pairs, substantially as specified.

3, In a friction spring 'draft rigging, the combination with the stops, draw-bar, direct acting spring and a pair of main followers havinginner curved friction faces, Ahinged segmental friction shoes having external and internal curved friction faces' and a pair of spring engaging friction shoe followers having external friction faces engaging the internal friction faces of the'hinged friction shoes, said spring engaging friction shoe follow-y ers having central hubs to guide or support the springs, substantially as specified.

lOO

with the draw-bar,` a longitudinally arranged-direct acting 4. In a friction spring draft rigging, the combination with the stops, draw-bar, direct acting spring, and a pair of main followers having inner curved friction faces, hinged' segmental friction. shoes having external and internal curved friction faces and a pair of spring engaging friction shoe followers having external friction faces engaging the internal friction faces of the hinged.

friction shoes, said hollow hinged friction shoes being hinged together in pairs on upright hinges, one on each side ofthe, draw-bar, substantially as specified.

5. In a 4friction spring draft rigging, the combination with the draw-bar, a longitudinally arranged direct acting lspring, a pair of main-followers having inner semicylindric friction faces, hollow segmental frictionl .shoes surrounding said spring and having external and internal curved friction faces and spring engaging followers hav'- ing external friction faces engaging the internal friction faces oi' said hollow friction shoes, substantially as speci' 6. In-a friction spring draft rigging, ythe combination spring, a pair of main followershaving inner semicylindric friction faces, hollow segmental friction shoes surrounding saidspring and having'external and internal curved friction faces and spring engaging followers having exte'rnal friction' faces engaging the internal friction l faces of said hollowfriction shoes, said spring engaging friction shoes having central projections to supportthe springs, substantially as specified.

7. ln a friction spring draft rigging, the combination with the draw-bar, a longitudinally arranged direct acting friction shoes having integral intertting hinge.. lugs connecting them together in pairs, substantially as specified.

8. In a friction spring draft rigging, the ,combinationwith the draw-bar, of a longitudinally arranged direct acting springa pair of main followers having inner curved frictionfaces 'and hollow segmental friction shoes surrounding said spring and interposed between the 'same and said main-followers, and having external curved friction faces in frlctional engagement with the curved friction faces of said main followers,` substantially as specified-` 9. In a friction spring draft rigging, the combination with the draw-bar,v of a. longitudinally arranged direct acting spring, a pair of -main followers having inner curved friction .faces and hollowsegmental friction shoes 'sur-v rounding said spring and interposed betweenthe sameand said main followers, andhavinge'xternal curved friction faces in frictlonal engagement with the curved friction faces of said main followers, said segmental frictionshoes being hinged'together in pairs, substantially as specified.

JOHN .F. QGONNOR.

Witnesses:

H, M. MUNDAY; -EDMUNDv AncocK. 

